As the first step in an effort to improve robustness of the cloud print proxy...

chrome/utility/utility_thread.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_UTILITY_UTILITY_THREAD_H_
 #define CHROME_UTILITY_UTILITY_THREAD_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 66 matching lines @@
       const std::vector<SerializedScriptValue>& serialized_script_values,
       const string16& idb_key_path);
 
   // IPC to notify we'll be running in batch mode instead of quitting after
   // any of the IPCs above, we'll only quit during OnBatchModeFinished().
   void OnBatchModeStarted();
 
   // IPC to notify batch mode has finished and we should now quit.
   void OnBatchModeFinished();
 
+  // IPC to get capabilities and defaults for the specified
+  // printer. Used on Windows to isolate the service process from printer driver
+  // crashes by executing this in a separate process. This does not run in a
+  // sandbox.
+  void OnGetPrinterCapsAndDefaults(const std::string& printer_name);
+
   // Releases the process if we are not (or no longer) in batch mode.
   void ReleaseProcessIfNeeded();
 
   // True when we're running in batch mode.
   bool batch_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(UtilityThread);
 };
 
 #endif  // CHROME_UTILITY_UTILITY_THREAD_H_